问题
单项选择题
应确保塔机回转时与相邻建筑物、构造物等的水平、垂直安全距离均大于（）m。
A、1
B、2
C、3
D、4
答案
参考答案：B
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应确保塔机回转时与相邻建筑物、构造物等的水平、垂直安全距离均大于（）m。
A、1
B、2
C、3
D、4
参考答案：B
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| It is 1 in Qing Dao. It's very hot here. Now, there are many people 2 vacation. They go to the beach and have 3 good time there. Today is 4 , it is not very hot. On the beach, a lot of people 5 to their friends 6 looking at the beautiful sea. Some of them are 7 , others are taking 8 . Can you find 9 ? I'm the boy in blue shorts. I' m going to dive (潜水). It's 10 . | ||||
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